Hey I bought a yamaha ypg 235 it was new but there is no sound. The seller told me that so I got it for a very good price cause there is no sound. I thought if I plug in the speakers I could hear the sound but the re is nothing comin out. What can cause the problem and how can it get fix I dont really wanna return the piano. I want to fix the problem

manugospel, July 2014